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对小麦声信号进行编辑和预处理，实验结合信号处理技术及MATLAB软件
我国是世界上小麦种植面积最大和消费最高的国家之一。小麦为国际主粮之一，也是食品工业的重要原料。作为最重要粮食品种之一的小麦，其价值与用途取决于它的品质。因此，基于信号处理技术，研究客观、便捷的小麦品质测定方法对提高小麦品质、减少产后损失、保证国家粮食安全具有十分重要的意义。本课题拟在研究、分析国内外无损检测技术在农产品品质分析应用现状和研究进展的基础上，研究小麦籽粒声信号的预处理方法。根据声学检测原理，研制出小麦籽粒的声信号采集装置，首先采集小麦籽粒下落碰撞所产生的声音信号，对小麦声信号进行编辑和预处理，实验结合信号处理技术及MATLAB软件，对单粒小麦样品的声信号进行谱估计和小波变换，提取出时域和频域特征参数，为探讨小麦声学特性与其品质指标的关系奠定基础。本论文利用MATLAB软件编写小麦声音信号预处理程序，通过对小麦籽粒声信号进行处理，成功的提取出了有效的时域、频域的多种特征参数，为研究其声学特性与小麦品质内在的关系，做了充分的准备工作。(China is one of the countries in the world which has the largest wheat growing area and highest consumption. Wheat is one kind of the staple food in the world and also an important material for food industry. The value of wheat and its use all depends on is quality, To enhance quality of wheat,readuce post harvest loss and ensure grain security, great efforts should be made to develop rapid, objective, and easy methods for assessing wheat quality using signal processing techniques. This paper do the research of wheat signal preconditioning method and it basis of analysis domestic and foreign non-destructive testing technology.According to acoustic detection theory,an equipment of obtaining wheat sound signals is developed. Collecting the dropping voice signals of different varieties of wheat samples.And then do editing and sound signal preprocessing on wheat through signal processing technology.This paper do some research about spectrum estimate and wavelet transform on single wheat wi)
- 2020-06-30 06:40:02下载
- 积分：1
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diagramas-dipolos
dipole antenna radiation graphics:
2D cuts, the other as a cut in phi would be expected to be an isotropic behavior (circle) with changing radios.
THE 3D I have not managed to get the animation
- 2013-12-09 03:46:49下载
- 积分：1
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diff_ODE
matlab环境下，多个计算微积分和微分方程的程序(matlab environment program, multiple computing calculus and differential equations)
- 2014-01-05 23:12:30下载
- 积分：1
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DFT
离散傅里叶变换的性质的matlab仿真程序，包括线性特性、时移特性、频移特性、对称性和循环卷积等性质(The nature of the discrete Fourier transform matlab simulation program, including linearity, time-shift feature, the nature of the frequency shift characteristics, such as symmetry and circular convolution)
- 2014-04-14 18:13:29下载
- 积分：1
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遗传算法优化程序
遗传算法优化程序，对汽车传动比进行优化，目标函数为经济性。(Genetic algorithm optimization procedures for automotive gear ratio to optimize the objective function for the economy.)
- 2021-03-06 19:49:30下载
- 积分：1
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EVM
该算法是经典的信噪比估计算法——误差矢量幅值法，通过计算接收信号中同相分量和正交分量的二、四阶矩，该算法能够很好的估计信号的信噪比(The algorithm is a classic signal to noise ratio estimation algorithm- the error vector magnitude method, by calculating the received signal with the phase component and quadrature component of the second, fourth-order moment, the algorithm can estimate a very good signal to noise ratio)
- 2009-05-10 09:41:07下载
- 积分：1
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s.c
The file introduces a modified method for maximum power point tracking of a photovoltaic array by the short circuit method.
- 2013-11-07 07:54:09下载
- 积分：1
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sat
FDM卫星通信仿真程序及一些辅助函数，共有六条上行链路(FDM satellite communication simulation program and some auxiliary functions, a total of six uplink)
- 2010-06-08 16:38:23下载
- 积分：1
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fenge30430
说明： 一些关于PCNN进行图像分割的Matlab程序,非常的好用.(PCNN for image segmentation about the Matlab program, very easy to use.)
- 2011-03-06 12:56:37下载
- 积分：1
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eg1006
模拟退火法求函数的最小值
结束条件为两次最优解之差小于某小量(End condition of the simulated annealing method and function of the minimum of twice the optimal solution of the difference is smaller than some small amount of)
- 2012-05-21 11:56:35下载
- 积分：1
